QEMU hw/audio/ac97.c resource management

CVSS Meta Temp Score
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CTI Interest Score
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5.0$0-$5k0.00

Summaryinfo

A vulnerability has been found in QEMU and classified as problematic. Affected by this issue is some unknown functionality of the file hw/audio/ac97.c. This manipulation causes resource management. This vulnerability appears as CVE-2017-5525. The attack requires local access. There is no available exploit. It is recommended to apply a patch to fix this issue.

Detailsinfo

A vulnerability was found in QEMU (Virtualization Software) (the affected version unknown). It has been declared as problematic. Affected by this vulnerability is an unknown part of the file hw/audio/ac97.c. The manipulation with an unknown input leads to a resource management vulnerability. The CWE definition for the vulnerability is CWE-399. As an impact it is known to affect availability. The summary by CVE is:

Memory leak in hw/audio/ac97.c in QEMU (aka Quick Emulator) allows local guest OS privileged users to cause a denial of service (host memory consumption and QEMU process crash) via a large number of device unplug operations.

The bug was discovered 03/15/2017. The weakness was presented 03/15/2017 by Li Qiang with 360.cn Inc. (oss-sec). It is possible to read the advisory at openwall.com. This vulnerability is known as CVE-2017-5525 since 01/18/2017. The exploitation appears to be easy. Attacking locally is a requirement. The exploitation doesn't need any form of authentication. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 97179 (Fedora 25 : xen (2017-cdb53b04e0)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 276476 (Fedora Security Update for xen (FEDORA-2017-d4ee7018c1)).

Applying a patch is able to eliminate this problem. The bugfix is ready for download at git.qemu-project.org. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (97179) and SecurityFocus (BID 95671†). See VDB-98144 for similar entry. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.2
VulDB Meta Temp Score: 5.1

VulDB Base Score: 4.0
VulDB Temp Score: 3.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.5
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Resource management
CWE: CWE-399 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 97179
Nessus Name: Fedora 25 : xen (2017-cdb53b04e0)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 867773
OpenVAS Name: Fedora Update for xen FEDORA-2017-d4ee7018c1
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: git.qemu-project.org

Timelineinfo

01/18/2017 🔍
01/18/2017 +0 days 🔍
02/14/2017 +27 days 🔍
02/15/2017 +1 days 🔍
03/15/2017 +28 days 🔍
03/15/2017 +0 days 🔍
03/15/2017 +0 days 🔍
03/16/2017 +1 days 🔍
09/08/2020 +1272 days 🔍

Sourcesinfo

Product: qemu.org

Advisory: openwall.com
Researcher: Li Qiang
Organization: 360.cn Inc.
Status: Not defined
Confirmation: 🔍

CVE: CVE-2017-5525 (🔍)
GCVE (CVE): GCVE-0-2017-5525
GCVE (VulDB): GCVE-100-98143
SecurityFocus: 95671 - QEMU 'ac97.c' Denial of Service Vulnerability
OSVDB: - CVE-2017-5525 - QEMU - Denial of Service Issue

See also: 🔍

Entryinfo

Created: 03/16/2017 13:34
Updated: 09/08/2020 15:26
Changes: 03/16/2017 13:34 (77), 09/08/2020 15:26 (3)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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